The attractant of a kind of thrips
Technical field
The invention discloses a kind of insect attractant, particularly relate to a kind of thrips attractant.
Technical background
Thrips Thysanoptera, inhales plant tender tissue (branch, blade, flower, fruit etc.) juice with adult and nymph file, and killed tender leaf, tender shoot mutation are hard curling withered, and plant strain growth is slow, shortened internodes; Take food in spending, smash pollen flying, destroy column cap, cause fallen flowers; Can harden after the tender fruit of children (as mango, fragrant plant pleasure, eggplant, cucumber, watermelon etc.) is killed, cause shedding time serious, have a strong impact on yield and quality.Thrip fuana is a lot, and vegetables, fruit tree, tealeaves, flowers and other crops all have occurring and damage.Because thrips build is small, polypide is become to be about 1 millimeter, long 0.2 millimeter of ovum, oblong, faint yellow.Adult is many draws juice between vein, not easily sees because it is less, often out in the cold in production, causes very large difficulty to control.In generation, occurs thrips more than a year, lays eggs on the floral organ and leaf of plant.During benign climate, can be adult by egg development at about 2 weeks.Thrips to be caused harm crop with larva and adult, and quantity occurs, and with crop different growing, there were significant differences, and the crop flowers phase reaches top, and after this quantity declines.Thrips also can spread disease viral disease.
The prevention and controls of current thrips mainly contains (1) cultural control, removes weeds in field and deadwood residual leaf early spring, concentrates and to burn or buried, eliminates over-wintering adult and nymph; Strengthen rich water quality management, impel plant strain growth healthy and strong, alleviate and cause harm.(2) physical control, utilizes the habit that thrips becomes blue, and at the blue haftplatte of deployment, trapping adult, haftplatte height and crop maintain an equal level.(3) chemical control, selects the medicament such as 25% imidacloprid wettable powder or 5% acetamiprid wettable powder, 4.5% high chloro milk oil, 5% bromine worm Cyano chrysanthemate to carry out spraying control.
In recent years, there is the green prevention and control technology of some thrips successively, as application number 200910227375.0 discloses the control that a kind of Purely natural plant insecticide with natural plants being raw material makes carries out thrips insect, if the patent No. 200820008447.3, the patent No. 200420027355.1 and application number 201020020566.8 are all carry out trapping according to the taxis design insect-sticking plate of thrips to color to carry out insect-killing trapping.A kind of medicine and using method of preventing and treating beautiful beans thrips that application number 201110405614.4 proposes, be applicable to kill beautiful beans insect thrips, apply green good fortune missible oil, clean, a dish happiness, A Weixi, dimehypo, aeontium and imidacloprid and other pesticide, easily to environment.Application number 201110101489.8 discloses the killing trapping device of a kind of thrips insect, mainly utilize the chemical compositions such as cineole, anisic aldehyde, hexenoic aldehyde, eugenol, hexenol, benzyl carbinol, carvol, linalool, iso methyl nicotinate to be mixed with the chemical information mixture with attracting action, make thrips insect pheromone lure.Rely on color trapping thrips, there is allure inadequate, the problem that effect is not good yet.In addition, of a great variety due to thrips, the attractant of chemical compositions composition disclosed in application number 201110101489.8 may to part thrips successful, and to other thrips poor effect.The attractant developing different infochemical has important production meaning.
Summary of the invention
The object of the present invention is to provide the attractant of a kind of thrips, what can be applicable to thrips class pest in vegetables, fruit tree, tealeaves, production of flowers and plants process lures control.
For achieving the above object, the present invention is achieved through the following technical solutions:
An attractant for thrips, is characterized in that: this attractant is a kind of liquid mixture comprising methyl anthranilate, geraniol, plant essence, alcohol.
Wherein, methyl anthranilate, geraniol, plant essence, alcohol mix composition according to part by weight 1 ~ 50:1 ~ 30:0.1 ~ 20:10 ~ 300.
Wherein, described plant essence is from plant leaf blade, adopt alcohol to carry out lixiviate, and by weight proportion, plant leaf blade 10 ~ 100 grams, organic solvent alcohol 20 ~ 200 grams, lixiviate was filtered after 3 ~ 8 hours, and it is for subsequent use to get filtrate.
Good effect of the present invention is: can efficiently lure thrips class pest, be applied to monitoring and the control of thrips in vegetables, fruit tree, tealeaves, production of flowers and plants process, cost is low, the quality safety of agricultural product can not be affected, can not pollute ecotope, to people, animal, natural enemy and beneficial organism safety, not destroy the ecological balance, be conducive to the sustainable development promoting vegetables, fruit tree, tealeaves, the industry of flowers and plants, promote industry synergy, increasing peasant income.
Embodiment
For the ease of understanding the present invention, below in conjunction with instantiation, the present invention is further described.Its effect is understood to be concrete elaboration further of the present invention, and not forms any type of restriction to the present invention.
Embodiment 1
From plant leaf blade, adopt alcohol to carry out lixiviate, by weight proportion, plant leaf blade 50 grams, organic solvent alcohol 150 grams, lixiviate was filtered after 5 hours, and it is for subsequent use to get filtrate.
] first methyl anthranilate, geraniol, plant essence, alcohol are mixed composition according to part by weight 1 ~ 50:1 ~ 30:0.1 ~ 20:10 ~ 300, then dissolve with acetone as solvent, namely make the attractant of thrips.The assay method of attractant effect is the attractant that will prepare, and joins colourless plastic flexible pipe, makes and lure core; Lure core to be fixed on white insects trap board to measure what prepare again, observe statistics after 72 hours and lure the thrips quantity collecting and arrive.Show in particular formula and the attractant effect in actual applications of Different Weight ratio in Table 1.
The attractant attractant effect in actual applications of table 1 Different Weight ratio
As can be seen from Table 1, formula 1 ~ 9 all has attractant effect to thrips, and wherein fill a prescription 4(methyl anthranilate, geraniol, plant essence, alcohol are according to part by weight 20:15:10:50) attractant effect best.
Embodiment 2
From plant leaf blade, adopt alcohol to carry out lixiviate, by weight proportion, plant leaf blade 10 grams, organic solvent alcohol 20 grams, lixiviate was filtered after 3 hours, and it is for subsequent use to get filtrate.
Methyl anthranilate, geraniol, plant essence, alcohol are mixed composition according to part by weight 20:15:10:50, then dissolves with acetone as solvent, namely make the attractant of thrips.
Embodiment 3
From plant leaf blade, adopt alcohol to carry out lixiviate, by weight proportion, plant leaf blade 100 grams, organic solvent alcohol 200 grams, lixiviate was filtered after 8 hours, and it is for subsequent use to get filtrate.
Methyl anthranilate, geraniol, plant essence, alcohol are mixed composition according to part by weight 20:15:10:50, then dissolves with acetone as solvent, namely make the attractant of thrips.